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Well I paid a designer draw it up in cad software, and an engineer to get the engineering certified. So basically the overall plan is good to go for city permits. But that doesn't include anything...

Sorry for the delay.. was on vacation...

I agree on the where does the air go issue. In fact that is part of why I don't want the 2nd system. The current system seems to be slightly over sized...

I hear ya... but what else can I do? The contractor won't guarantee the work of any hvac guy but his own... They all say that. And the job is big enough that it needs to be done while the addition...

I gave him a call, but he only does designs if he can do the install. And contractors like to use their own hvac guys... So I guess I can't use him. Any ideas on how I find someone who can do the...

So is he a designer? or an installer?

Randell

Is a designer different then the guy who implements the design? Like an architect vs a framer?

I have a design for the addition... it's just a question of how to manage the hvac. So far the HVAC guys are free estimates since they are working for the contractor... I bet most HVAC guys don't...

Well, if I call an HVAC guy he will realize that the contractor will use his own guy no matter what this guys says. So he has no reason to even come out.
Can I pay a guy for advice even if there is...

Tried that... I got the "I don't know what ... was thinking but what I am saying is this". Which really is the smart answer, you ain't lieing when you say you don't know what someone else was...

Well I don't think I really expect a direct answer. I am hoping for ideas on how to figure out the answer...

I am confident the 3rd guys solution would do the job, but the cost of it is at least...

Hi all, and thanks in advance for any insight you offer. :)

I live in portland, Oregon. The house is currently 2550 sq feet. Has one unit to do the whole house.
Trouble is, the upstairs is...